This paper describes the basic profiles of the five electromagnetic stations in the Shandong area which have both geoelectric field observation and geomagnetic field observation． We select the observation date of the year 2011 in each station，and evaluate the observation data quality briefly． The paper focuses on the comprehensive and systematic comparative analysis of the geoelectric field observation and geomagnetic field observation data in the five stations， explores not only the daily change of geoelectric field and geomagnetic field but also the distinction and contrast of these observations in terms of all kinds of interference，and provides mutual references for the analysis of observation data． It can increase the timeliness and accuracy in the process of observation data analysis，and thus improves the inner quality of observation data， making it more practical in seismic monitoring and earthquake prediction．